HR: 16:45h
AN: SM44A-04    [Abstracts]
TI: Coordinated Observation of Field Line Resonance in the Mid-magnetotail
AU: * Zheng, Y
EM: Yihua.Zheng@jhuapl.edu
AF: JHU/APL, 11100 Johns Hopkins Rd., Laurel, MD 20723 United States
AU: Lui, A T
EM: Tony.Lui@jhuapl.edu
AF: JHU/APL, 11100 Johns Hopkins Rd., Laurel, MD 20723 United States
AU: Mann, I R
EM: imann@space.ualberta.ca
AF: University of Alberta, Department of Physics, Alberta, T6G 2E1 Canada
AU: Takahashi, K
EM: kazue.takahashi@jhuapl.edu
AF: JHU/APL, 11100 Johns Hopkins Rd., Laurel, MD 20723 United States
AU: Watermann, J
EM: jfw@dmi.dk
AF: Danish Meteorological Institute, Atmosphere Space Research Division, Copenhagen, DK-2100 Denmark
AU: Chen, S
EM: schen@pop600.gsfc.nasa.gov
AF: Universities Space Research Association, NASA Goddard Space Flight Center, Greenbelt, MD 20771 United States
AU: Rae, I J
EM: jrae@space.ualberta.ca
AF: University of Alberta, Department of Physics, Alberta, T6G 2E1 Canada
AU: Mukai, T
EM: mukai@stp.isas.jaxa.jp
AF: ISAS/JAXA, 3-1-1, Yoshinodai, Sagamihara, Kanagawa, 3-1-1 Japan
AU: Russell, C T
EM: ctrussell@igpp.ucla.edu
AF: UCLA, Institute of Geophysics and Planetary Physics, Los Angeles, CA 90024 United States
AU: Balogh, A
EM: a.balogh@ic.ac.uk
AF: Imperial College, Department of Space and Atmospheric Physics, London, SW7 2AZ United Kingdom
AU: Pfaff, R F
EM: Robert.F.Pfaff@nasa.gov
AF: NASA Goddard Space Flight Center, Laboratory for Solar and Space Physics, Greenbelt, MD 20771 United States
AU: Reme, H
EM: Henri.Reme@cesr.fr
AF: CESR, BP4346, 31028 Toulouse, Toulouse, Cedex 4 France
AB: Standing Alfv‚n waves of 1.1 mHz were observed by the Cluster satellites in the mid-Earth magnetotail (around ~ 21 Re equatorial distance, 0200 MLT) during 0600 - 0700 UT on August 8, 2003 while Cluster were situated in the central plasma sheet. Pulsations with the same frequency were also observed at several ground stations near Cluster's footpoint. The standing wave properties were determined from the electric and magnetic field measurements of Cluster. Data from the ground magnetometers indicated a latitudinal amplitude and phase structure consistent with the driven field line resonance (FLR) at 1.1 mHz. Simultaneously, quasi-periodic oscillations at different frequency were observed in the post-midnight/early morning sector by GOES 12 ( ~ 8.7 Re), Polar ( ~ 11 - 14 Re) and Geotail ( ~ 9.8 Re) as well. The August 8, 2003 event provides, for the first time, a coordinated in situ and ground-based observation of FLRs in the mid-magnetotail on stretched field lines.
DE: 2748 Magnetotail boundary layers
DE: 2752 MHD waves and instabilities (2149, 6050, 7836)
DE: 2784 Solar wind/magnetosphere interactions
SC: SPA-Magnetospheric Physics [SM]
MN: Fall Meeting 2005